Accident Details
A pilot-in-command (PIC) was checking out another pilot on a pipeline survey route. The copilot occupied the left seat and was flying the aircraft. While surveying the pipeline, the crew proceeded north up a canyon toward Douglas Pass. No turbulence and little effect from the wind were noted as they were en route to the pass.
As they approached the pass, a climb was started with climb power. About half a mile from the pass, and several hundred feet below it, a downdraft was encountered. The PIC took control, applied full power, and turned to crest a hill and descend in a valley. He then noticed he was sinking too fast and turned in the opposite direction. Subsequently, the aircraft crashed at an elevation of about 8,000 feet.